Best UK online payment for subscription SaaS 2026
For UK SaaS businesses, software-as-a-service, monthly or annual recurring revenue. Card-on-file with SCA at sign-up, recurring billing via Merchant Initiated Transaction exemption. Stripe Billing is the standard; Adyen Subscriptions wins at enterprise; GoCardless wins on B2B Bacs recurring.
The ranking
1. Stripe Reader S700
4.0 / 5Best for UK SaaS overall
Touchscreen handheld terminal with built-in receipt printer · Custom (Stripe pricing) · Stripe terms
Stripe Billing is the default UK SaaS payment infrastructure in 2026: 1.5% + 20p per transaction, recurring billing native, dunning management (failed-payment retry), subscription upgrades and downgrades, prorated billing, tax compliance via Stripe Tax. WooCommerce Subscriptions, Chargebee, ChartMogul all integrate. Stripe Reader S700 for any in-person add-on side.
2. Adyen for Platforms
4.0 / 5Best for enterprise UK SaaS
Multiple terminals; mostly platform-bundled · Interchange-plus pricing; bespoke · Bespoke, often year-long
Adyen Subscriptions on bespoke interchange-plus pricing wins above £500k monthly subscription revenue. Direct UK acquirer relationship, AMEX rate negotiation, RevenueProtect chargeback prevention, multi-currency handling for SaaS sold internationally.
Quick comparison
Headline rate, hardware cost, contract and form factor at a glance.
| Rank | Terminal | Rate | Hardware | Contract |
|---|---|---|---|---|
| #1 | Stripe Reader S700 | Custom (Stripe pricing) | £329 | Stripe terms |
| #2 | Adyen for Platforms | Interchange-plus pricing; bespoke | Bespoke per merchant; typically platform-bundled | Bespoke, often year-long |
FAQs
What is the best UK payment system for a subscription SaaS business?
Stripe Billing is the default at 1.5% + 20p per transaction with recurring billing native, SCA handled, dunning management, subscription upgrades and prorated billing all built-in. For enterprise UK SaaS above £500k monthly: Adyen Subscriptions on interchange-plus. For B2B SaaS above £50/month per customer: GoCardless Bacs Direct Debit at 1% + 20p (capped £2).
How does UK SCA work for recurring SaaS subscriptions?
Customer SCA-authenticates via 3D Secure 2 at the first transaction (sign-up). Subsequent recurring charges of the same amount, same frequency, same merchant qualify as Merchant Initiated Transactions (MIT) and are exempt from SCA challenge. Charge goes through without customer intervention. If the amount or frequency changes (e.g. usage-based billing), SCA may re-trigger.
How do UK SaaS businesses handle dunning (failed payment recovery)?
Stripe Billing has built-in Smart Retries that retry failed payments on optimised days. Adyen has similar. GoCardless has Success+ retry intelligence (Plus plan, £25/month). Most UK SaaS recover 30-50% of failed-payment attempts within 14 days using these tools. MerchantHQ wires the dunning rules into your acquirer setup.
Can a UK SaaS business sell internationally?
Yes. Stripe, Adyen, Paddle, Lemon Squeezy all handle multi-currency UK-based SaaS sales to international customers. Paddle and Lemon Squeezy are Merchant of Record (MoR) which means they handle international VAT/sales-tax compliance for you (Paddle 5% + 50c, Lemon Squeezy 5% + 50c blended); Stripe and Adyen require you to handle VAT yourself (lower fee, more compliance work).
Methodology
Rankings are based on direct hands-on testing, published rates, settlement timing, contract terms, and acquirer reliability. We do not accept payment for ranking position. See our full methodology and editorial policy.
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Open quote form →Reviewed by Oliver Mackman, Director. Last reviewed: 2026-05-11.